Mission Avenue over State Route 99
FairMerced County, California · 10-MER-099-11.59 · Structure no. 39 0228
- Built
- 2007
- 18 years old
- Condition
- Fair
- inspected April 2024
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete Continuous
- Length
- 311 ft
- 2 main spans
- Daily traffic
- 800
- 2000 count
- Owner
- State
- State Highway Agency
About this bridge
Mission Avenue over State Route 99 is a prestressed concrete continuous box beam or girders - multiple carrying Mission Avenue over State Route 99 in Merced County, California. It was built in 2007, so it is 18 years old, younger than the California average of 54.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 800 vehicles a day, roughly 2% of them trucks, projected to reach 1,330 by 2046. The structure is 311 ft (94.8 m) long and 97 ft wide. If it were closed, the detour would be 0.6 mi (1 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Mission Avenue over State Route 99 built?
It was built in 2007, making it 18 years old in 2025.
What condition is Mission Avenue over State Route 99 in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in April 2024.
How much traffic does Mission Avenue over State Route 99 carry?
About 800 vehicles per day (2000 count), of which roughly 2% are trucks.
How long is Mission Avenue over State Route 99?
The structure is 311 ft (94.8 m) long with a longest span of 178 ft (54.4 m) and a deck 97 ft wide.
Who owns Mission Avenue over State Route 99?
It is owned by the State Highway Agency.